Civil Engineering - Concrete Technology - Discussion

Discussion :: Concrete Technology - Section 1 (Q.No.4)

4.

Wp and Wf are the weights of a cylinder containing partially compacted and fully compacted concrete. If the compaction factor is 0.95, the workability of concrete is

 [A]. extremely low [B]. very low [C]. low [D]. high [E]. none of these.

Explanation:

No answer description available for this question.

 Amal Ranjan said: (Apr 12, 2013) Higher compaction factor implies higher workability. A mix with good workability compacts easily.

 SUDHANSU BHAGAT said: (Aug 27, 2013) Extremely low - 0.65 to 0.68. Very low - 0.75. low - 0.83 to 0.85. Medium - 0.90 to 0.92. High - 0.95.

 Ghassan Kharouf said: (Apr 21, 2014) More compaction, means more dense material, otherwise (lower workability). For a good workability, compaction factor must be between (0.7 - 0.95).

 Vishal Dave said: (May 7, 2014) The more compaction means more denser concrete and as 1% of air voids reduce strength by 5%, more compaction provides lesser voids which provides good strength.

 MOHAMED AHMED IBRAHIM said: (Nov 2, 2014) In fact partial compaction happens during pouring & when we use vibration or other method of compaction we will get full compaction. And since the sample obtains 95% i.e. it has high work ability.

 Amresh said: (Nov 29, 2014) As it goes towards 1 its work ability increases.

 Md Saleem Ansari said: (Jan 19, 2015) As the ratio between partially compacted and fully compacted concrete increases, the work ability of concrete also increases upto the maximum.

 Antony said: (Aug 17, 2016) What is meant by wf and wp?

 Sushan Bastola said: (Oct 24, 2016) wp = wt of partially compacted concrete and wf = wt of fully compacted concrete.

 Vishal said: (Nov 17, 2016) Agree @MD Saleem Ansari.

 Muddasser said: (Dec 19, 2016) 0.95 is high.

 Dhiraj P Chaudhari said: (Jan 3, 2017) For a good workability, compaction factor must be between (0.7 - 0.95). Extremely low - 0.65 to 0.68. Very low - 0.75. Low - 0.83 to 0.85. Medium - 0.90 to 0.92. High - 0.95.

 Ganesh Yadav said: (Feb 15, 2017) Please expiain it clearly.

 Gurdev Singh said: (Mar 8, 2017) Thank you all for the given explanation.

 Afajal Afaridi said: (Apr 29, 2017) More compaction concrete then high density .95.

 Macdonald said: (Jun 14, 2017) Thanks for all your help by explaining the solution.

 M I Sugur said: (Sep 15, 2017) Thanks for all your kind information.

 Mohit said: (Dec 25, 2017) Higher workability and lower strength.

 Kailingtan said: (Jun 23, 2018) Why the compaction factor test more suitable for dry mixes?

 Alka Gautam said: (Jul 17, 2018) Thanks for more explanation.

 Apurva said: (Dec 18, 2018) Extremely low - 0.65 - 0.68. Very Low - 0.75. Low - 0.83 - 0.85. Medium - 0.90 - 0.92. High - 0.95.

 Sathish said: (Mar 24, 2019) Thank you all for explaining.

 Pulak Moral said: (Jul 6, 2019) 0.83, 0.92, 0.95 low medium and high respectively for very low 0.83>0.75 and extremely low 0.75>.

 Surya said: (Dec 18, 2019) If the compaction factor value is 0.95, then the workability will be high.

 Sushant Ranchi said: (Apr 7, 2020) For a good workability, the compaction factor must be between (0.7 - 0.95). Extremely low - 0.65 to 0.68. Very low - 0.75. Low - 0.83 to 0.85. Medium - 0.90 to 0.92. High - 0.95.

 Amaresh said: (Feb 2, 2021) Extremely low - 0.65 to 0.68. Very low - 0.75. Low - 0.83 to 0.85. Medium - 0.90 to 0.92. High - 0.95.

 Fazul Ul Rahman said: (Nov 16, 2021) Please can anyone the explain given equations? wp /Wf.